The motion relative to ground will start a few seconds after the Button "Start" is pressed.
This enables us to realize the final motion observed in the rotating frame is a combination of two parts: the rotation of the frame and the motion
of the ball itself.

For the convenience of users,some interesting cases are preset (click to open the second combobox in
the second row and select one). In each preset case, the parameters are
still capable to be adjusted.Preset Cases

"Linear motion" ---
the ball is stationary relative to ground before it is thrown outward.

"Linear motion (Coriolis
deflection)" --- the ball is stationary relative to the rotating
frame before it is thrown outward.